99868166370 has 192 divisors, whose sum is σ = 311015877120. Its totient is φ = 21738461184.

The previous prime is 99868166291. The next prime is 99868166407. The reversal of 99868166370 is 7366186899.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 99868166298 and 99868166307.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3303162 + ... + 3333258.

It is an arithmetic number, because the mean of its divisors is an integer number (1619874360).

Almost surely, 2^99868166370 is an apocalyptic number.

99868166370 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

99868166370 is the 158010-th decagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99868166370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155507938560).

99868166370 is an abundant number, since it is smaller than the sum of its proper divisors (211147710750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99868166370 is a wasteful number, since it uses less digits than its factorization.

99868166370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30369 (or 30366 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The spelling of 99868166370 in words is "ninety-nine billion, eight hundred sixty-eight million, one hundred sixty-six thousand, three hundred seventy".